Question

Help?

Find the approximate length of the diagonal of the rectangle.
A) 4.3 cm
B) 6 cm
C) 9.4 cm
D) 12 cm

Answer 1

4.3 cm

Explanation:

Took the test

Answer 2

This is just good 'ol Pythagorean Theorem.

a^2 + b^2 = c^2

The diagonal will be c because c is always across from the right angle of a right triangle.

3.6^2 + 2.4^2 = c^2
12.96 + 5.76 = c^2
18.72 = c^2

Now take the square root of 18.72 to find c. You get 4.32666...